EP0508893A1
Expired / Lapsed
EP
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Substrate for microwave component
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1992-04-08
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Granted: —
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Expires: 2012-04-08
Abstract
Abstract A substrate for a microwave component, is composed of an underlying substrate, and a first oxide superconductor layer, a dielectric layer and a second oxide superconductor layer stacked on the underlying substrate in the named order. The dielectric layer is formed of a compound oxide thin film including La, Ca and Mn and having a perovskite crystalline structure.
Inventors
- 👤 Saburo Tanaka
- 👤 Hidenori Nakanishi
- 👤 Hideo Itozaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:36
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/081; H10; H10N; H10N60/00; H10N60/20; H10N60/203
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
60 words
A substrate for a microwave component, the substrate being composed of an underlying substrate, and a first oxide superconductor layer, a dielectric layer and a second oxide superconductor layer stacked on said underlying substrate in the named order, said dielectric layer being formed of a compound oxide thin film including La, Ca and Mn and having a petovskite crystalline structure.
Claim 2
Dependent Claim
30 words
A substrate claimed in Claim 1 wherein said compound oxide thin film including La, Ca and Mn has a composition of La 0.7 Ca 0.3 Mn 1.0 O 3-X .
Claim 3
Dependent Claim
36 words
A substrate resonator claimed in Claim 1 wherein said underlying substrate is formed of a material from a group consisting of an MgO single crystal, a SrTiO 3 single crystal and a LaAlO 3 single crystal.
Claim 4
Dependent Claim
40 words
A microwave resonator claimed in Claim 1 wherein each of said first and second oxide superconducting film is formed of a material from a group consisting of Y type compound oxide, Bi type compound oxide and T1 type compound oxide.
Claim 5
Dependent Claim
41 words
A microwave resonator claimed in Claim 1 wherein said underlying substrate is formed of a SrTiO 3 (110) single crystal substrate, and each of said first and second oxide superconducting film is formed of YBa 2 Cu 3 O y (6<y≦7).
References Cited (Backward Citations)
No citation records indexed.
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